Overhead conveyer



May 31, 1927.

R. A. MCgGU-RRY ovERHEAD co'wmmn Filed Jupe 29. 1926- 2 Sheets-Sheet 2 *I lNvENToR Rog/VA. furgf,

MME W ATTORNEYS itl Patented May 31, 1927.

ROY A. MCCOURRY, OEKKNAPPA, OREGON.

i OVERHEAD coNvEYER.

Application 'led June 29,

Aoverhead conveyers, of that type which is commonly used in logging operations, and which includes a carriage movableon an inclined overhead cable or skyline and means for suspending a heavy object, such as a log, from the carriage during the movement of the carriage along the inclined cable line.

An object of the invention is to improve overhead conveyers of the type referred to byproviding on the carriage means 'for cooperating with theobject suspension means of the conveyer to releasably support the object that is to be carried at a given distance vbelow the carriage eventhough the lines which control the position of the can riage on the carriage supporting line are slack.

A further object of the invention is the provision in an overhead conveyerV of the character described of holding means for releasably maintaining an object that is to be carried at a given distance below the carriage and operable from the ground as the result of a pull on the suspension `means to release the suspension means from the holding means so that the object'that is being carried may 'be lowered to the ground at any desirable point along the carriage supporting cable. i

Other objects and advantages of the in"` vention may be apparent fromthe following description, considered in conjunction with the accompanying drawings, in which# Figure l isa perspective view of an over*- head conveyer equipped with the invention,

Figure 2 is a relatively enlarged longitudinal vertical section througha carriage that used in the conveyor, showing thesuspension cable holding means that the invention lprovides in elevation and in position to cooperate with the suspension cable to hold an object that is to be carried ata given distance below the carriage, n Y

Figure Bis a View similar to Figure 2, showing the suspension cable holding means in position to permit movement of thesuspension cable as required to lower the obje that is to be carried to the ground, l

Figure il is a perspective group view of the members of an actuating device' that is used in the holding means that the invention provides, i

Figure 5 is a perspective view of the members oft a couplingfor connecting the adja- 1926. serial No. 119,501.

cent ends of sections of a suspension cable that may be used in the aforesaid conveyer, and

lligure t3 is a fragmentary section substantially along the line 6-G of Figure 2.

An overhead conveyer with which the invention may be used is partially shown in Figure 1. This overhead conveyer includes an inclined cable track or sky-line l, the upper end portion of which is suitably connected with the upper end of a mast 2, which issuitably stayed, as by means of the guy lines 3. The complete cable l is not shown in the drawings, but it will be understood that the cable l extends a considerable distance from the mast 2 and that the lower end of the cable is fixed against movement by suitable means (not shown) so that the cable l vwill be kept taut at all times. A carriage that is adapted to move on the cable 1 may have a frame which includes a pair of fixedly spaced side platesy 4; and a pair of peripherally grooved wheels 5 are rotatably sup'- ported between the upper portions of the side plates ALas by means of the transverse shafts 6 which extend between the side plates et. The respective wheels 5 are in alignmentwith each other edgewise and rest on the cable 1, the bottoms of the grooves in the'peripheries of the Wheels 5 being in contact with the cable l, whereby the carriage will be supported by the cable l and is adapted to move along the cable l. A hold-back line 7 is connected at one end, as at 8, with the side plates l of the carriage frame. The hold-bacl line is passed over the sheave of a pulley 9 which is supported on the mast 2. The hold-back line T then is passed through suitably located guide pulleys, as at l() and 1l, respectively, on the ground to a winding and unwinding engine, not's'hown. The means for suspending an article or load that is to be carried by the carriage from the carriage includes a suspension or hauling cable l2 which Ain practice extends from a winding engine, not shown, that is located adjacent to the lower end o the'cable ll, over a supportingr she-avc i3 that-.is supported, as by means of the transverse shaft 14, between the lower portions of the side plates it of the carriage frame.

1The free end of the hauling or suspension cable 12 is adapted to beattached to an object or load, such as the log l5. The parts which have beend'escribed so far are ordi-= nary inconstruction and may vary considerably in details from those which are shown (it)v in the drawings. lVith the construction that has been described so far, the load or log is hoisted from the ground toward the carriage by a pull on the hauling cable 12 while the hold back cable 7 is kepttaut and it is obvious that with the construction that has been described so tar, both the holdback cable 7 and the hauling cable 12 must be kept taut at all times, after the load 15 has been lifted to a desirable height from the ground to prevent the load from dropping downward until the slack has been taken up in the vhauling cable. Consequently, care must be taken with the construction that has been described so far to wind up the hauling cable 12 at the same rate atwhich the holdback cable has been unwound to permit movement of the carriage on the cable 1 toward the lower end of the cable 1. Theinvention provides means on the carriage and operable by a pull on the cable 12'to engage with an enlarged portion 16 of the cable 12 to vprevent retrograde movementof the cable 12 through the carriage should slack occur l' in the line 12 after the load has been hoisted to a desirable distance below the carriage 1 and operable by a second pull on the cable 12 to release the enlarged portion of the cable 12 so that retrograde movement of the cable 12 through the carriage to effect lowering of the load is permitted.

In carrying out the invention, I provide a guide sheave 17 which is supported between the lower portions of the side plates 4t of the carriage frame, as by means of the transverse shaft 18, in edgewise alignment with the supporting sheave 13 and so that the cable 12 will pass over the guide sheave 17 before engaging with the supporting sheave 13, both the guide sheave 17 and the supporting sheave 13 being peripherally grooved :tor engagement with the cable12 so that the portion oit the cable 12 that passes through the carriage between" the side plates l of the carriage will be held against lateral movement. The aforesaid enlarged portion ot the cable 12 may be a conventional coupling or union betweenadjacent ends of sections ot the cable 12 and said union may coinprise the male coupling member 16, the female coupling member 16h and the set screw 18, the male and emale members ot the coupling being in threaded engagement with each other and being further connected by the set screw 18, as is usual. A holding or latching wheel 20 `is rotatably supported on the transverse sha-ft 21 between the side pla-tes i 'of the carriage frame directly above and adjacent tothe supporting sheave 13 and also in edgewise alignment with the supporting sheave 13. The holding wheel 20 has a' plurality of regularly spaced integral outwardly extending'radial projections 22 on its periphery. The extremity of each of the projeetions22 is adapted to lie in the groove in the periphery ot the supporting sheave 13as best seen in Figure 6 when the wheel 2O has been' turned about its axis so that that projection 22 depends straight downward'froin the wheel 2O toward the periphery of the supporting sheave 13 and each projection 22 is formed with a longitudinally extending groove or notch'23 inits outer end for cooperating witha relatively deep middle portion 24 of the peripheral groove of the supporting sheave 13 to produce an opening between the periphery of the supporting sheave 13 and the adjacent projection 22 that is substantially circular in cross section and is of slightly greater cross sectional area than the cable 12 proper but of less cross sectional area than the enlarged portion 16 of the cable 12. The holding pawl 25 is supported pivotally adjacent to its upper end between the side plates t of the carriage frame by means of a transverse pin 26 so that the lower end portion of the holding pawl bears against the periphery of the wheel 2O and is adapted to engage with the adjacent projection 22 on the wheel 2O to prevent rotation of the wheel 20 in a clockwise direction from the position shown in Figure 2. An expansion spring 27 is connected at one end to a suitable bracket 28 on one of the side plates 4 and bears at its other end against the holding pawl 25 and thus tends to prevent the free end port-ion ot the holding pawl from swinging radially outward beyond the outer end of an adjacent projection 22. A ratchet wheel 29 is axially aligned with the wheel 20and rigid with the wheel 20, preferably being 'formed integrally with the wheel 20. The ratchet wheel 29 has regularly spaced teeth 30 en its periphery, there being twice as many teeth 30 as projections 22 on the wheel 20. Each of the teeth 30 includ-es a relatively longinclined wall 30av and a shorter. radialwvall 30h. An actuating pawl 31 is disposed at the upper side or edge of the ratchet wheel 29 and has a shoulder 32 on its under side adjacent to the tree end of the actuating pawl31 adapted to abut the radial wall 30brr otthe adjacent tooth 30 and cause rotation et the ratchet wheel. 29 and therefore oi the wheel 20 when the actuting pawl 31 is moved longitiulinally against the radial wall of the adjacent tooth 30. The actuating pawl 31 is supported at the upper end ot a lever 33. being connected with the lever 33 .by a Ipivot element 3ft which is parallel with the-shaft 21. rlhe lever 33 is ulcrumed intermediate its length on a transverse pin 35 between the side plates a and at the side of the ratchet wheel 29 substantially opposite the stop pawl 25. The lower end portion of the lever 33' is enlarged later-ally and is bifurcated for a considerable distance lfrom its lower end. by the Il U slot 36, thus producing the `furcations or forks 33EL which straddle the cable 12. rlhe fork 36 is suliiciently wide to permit not only the main-portion of the cable 12 but the enlarged portion 16 thereof as well to pass through the slot 36. A stop plate 37 has a pair of ears'37"L at its upper vend arranged to straddle a pair oi' outstanding ears 38 on the lower end portion of the lever 33 above the slot 36, the ears 37 being plate 37 terminates substantially flush with the lower end ofthe lever 33 and the plate is formed with a vertical slot which extends from the lower end ot th-e plate 37 tor approximately the same height as the slot 36. The slot /lO is suliiciently wide to permit the main portion ot the cable 12 to pass therethrough butis of less width than the diameter oi' the enlarged portion 16 ot the cable 12. An expansion spring 4 1 has one end attached to a suitable bracket l2 on the inner face of oneV of the side plat-es et and bears at its other lend against the outer tace of the lever 33 at the level olf the pin 35 on which the lever 33 is 'ulcrumedV7 whereby the spring- 41 will function to maintain the lever 33 normally in vertical position.

From the foregoing descriptionof the various parts of the device, the operation thereof will be readily understood. Swinging of the lower end ot the lever 33 from the'position shownsin Figure 3 to the position shown in Figure 2 or in other words in the general direction ot the guide sheave 17 will actuate the pawl 31 to turn the ratchet wheel 29 and consequently the holding wheel 2O through a part ot a revolution, the periphery of the holding wheel moving under the stop pawl 25. The return movement of the actuating pawl 31 from the position shown in Figure 2 to the position shown in Figure 3 will not actuate the ratchet wheel 29 as the pawl 31 will ride along an inclined wall et one of the teeth 30 and will notfengage with a radial wall 30b of a tooth 3 0. The teeth 3() on the ratchet wheel are arranged relai tively to the projections 22 on the holding wheel so that two ,successive operating strokes oi the actuating pawl 31 are required to turn the holding wheel 2() through one third of a complete revolution, there being three of the projections 22 on the holding wheel or inother words through a part ot' a revolution equal tothe distance on' the periphery of the holding wheel 2 0 from the center oi one of the projections 22 to .the center of theadjacent projection 22. Therefore, when the holding wheel 20 is in such position that one ot the projections 22 is disposed vertically at the lower edge of the holding wheel 20 and extends into the peripheral groove at the upper edge oi the supporting sheave 13 as shown in Figures 2 and 6, one operating stroke oi' the actuating pawl 31 will turn the holding wheel so that the edge portion of the'holding wheel that is located directly above the vertical diametrical line of the supporting sheave 13 will be located midway between the Aadjacent projections 22 and the peripheral groove in the upper kedge portion of the supporting sheave 13 will be entirely unobstructed so that both the main portion or" the cable 12 and the enlarged portion 16 ofthe cable 12 may pass freely along the peripheral groove in the upper edge portion of the supporting sheave 13. A second operating stroke ot the pawl 311will turn the holding wheel 2O until one of the projections 22 depends into Athe peripheral groove in the upper edge portion of the supporting sheave 13 and then the enlarged portion 16 of the cable 12 cannot pass along the peripheral groove in the upper edge portion of thev t supporting sheave 13 between the bottom of saidperipheral groove and the adjacent projection 22, only the main portion of the cable 12 being permitted to pass between the end of the adjacent projection 22 and the bottom of the peripheral groove in the upper edge portion of the supporting sheave 13. rThe holding pawl 25 `will prevent return rotary movement of the'holding rwheel 20 after the holding wheel has been turned to any possible position by'meansof the actuating pawl 31 and the ratchet wheel 29. The position of the holding wheel when one of the projections 22 depends into the peripheral 'groove in the upper edge portion of the supporting sheave 13 and cooperates with the latter to prevent passage oi th-e enlarged vportion 16 ofthe cable between the projection 22 andthe periphery of the supporting sheave 13 may be termed the active or latching position of the holding wheel 20 and the position of the holding wheel 20 when a portion of itsy periphery between adjacent projections 22 is located directly above the vertical median or diametrical line ot the supporting sheave 13 and the peripheral groove in the upper edge portion of the supporting sheave 13 is unobstructed maybe termed the inactive ornon-latching position of the holding wheel 20.

In the operation of the device, the free end of the cable 12 is attached to the load 15 that iste be carried While the holding wheel 26 is in inactive or non-latching position as Shown in Figure 3. The cable 12 lOfx llt]

porting sheave 13.

then is drawn over the supporting sheave 13 and the guide sheave 17 and through the slots lJLG-36 of vthe-'members j 37 and 33, which are located between the supporting sheave 13 and the guide sheave 17, until the enlarged portion 16 of the cable 12 contacts with the plate 37 at the side edges of the slot 40, at which time the load 15 will have been hoisted until it is well above the ground and is ata desirable distance below the carriage. A slight further pull on the cable 12 will cause the plate 37 and the lever 33 to be swung as a unit from the position shown in Figure 3 to the position shown in Figure 2, whereby the actuating pawl 3l will be actuated tov effect turning of the ratchet wheel 29 and the holding wheel 2() until the holding wheel'2O is in active or latching position with respect to the sup- The cable 12 then may be slaclrened slightly to permit the enlarged portion 16 thereof to move backward against the lower end of the adjacent projection 22 and the periphery of the upper edge portion of the supporting sheave 13, after which further retrograde movement of the portion of the cable 12 on which the load 15 is suspended will be prevented so long as the holding wheel 2O is in act-ive or latching position, no matter how much slack may occur in the remaining portion of the cable 12. The spring 11 will function to return the lever 33 and the plate 37 from the position shown in Fig. 2 to the position shown in Figure 3 as soon as the pressure of the enlarged portion of the cable 12 on the plate 37 has been removed. Therefore, when it is desired to lower the load 15 to the groundk from said given distance below the carriage, it only is necessary to pull the cable 12 forward until the enlarged portion 1G thereof has again engaged the plate 37 and has actuated the plate 37 and the lever to effect through the agency of the actuating pawl 31 and the ratchet wheel 29 rotation of the `holding wheel from active or latching position as shown in lligure 2 to inactive or non-latching positionv as shown in Figure Since the slot 36 inthe lower end portion of the lever33 is wider than the diameter of the enlarged portion 16 of the cable 12 and the plate 37 is hingedly attached to the lever to swing away from the lower end portion 'of the lever 33 toward the holding wheel 20, it isobvious that the entire cable 12, including the enlarged portion 16 thereof may be drawn back over the guide sheave 17 and over the supporting sheave 13 when the holding wheel 20 is in inactive or non-latching position, if suchy retrograde movement of the cable 12 should be desired at any time. l

The device is simple in construction and reliable in Vuse and when applied to the carriage of a conveyer of the type shown in the drawings will effect an economy in the time and labor that will be required forthe transportation of a given load .for a given distance along the carriage supporting cable or sky-line.

Obviously, the invention is susceptible of embodiment in forms other than that illustrated in the accompanying drawings, and I therefore consider as my own all such modifications and adaptations thereof as fairly fall within the ,scope of the appended claimsl I claim :--A

1. In a conveyer, a cable having an end portion attachable to a load that is to be carried and having an enlarged portion adjacent to said attaching end portion, a movable overhead supporting sheave over which said cable is trained, a rotary holding wheel disposed in edgewise alignment with said supporting sheave and adjacent to said supporting sheave, said holding wheel having a plurality of regularly spaced projections on its periphery, each of said projections being adapted when in a position proximate to the periphery of said supporting sheave to cooperate with saidsupporting sheave to' prevent passage of the enlarged portion of said cable between said projections and the per riphery of said supporting sheave, and means for actuating said holding wheel to dispose said projections successively in or out of position proximate to the periphery of said supporting sheave.

2. In a conveyer, a cable having an end portion attachable to a load that is to be carried and having an enlarged portion adjacent to said attaching end portion, amovable overhead supporting sheave over which said cable is trained, a rotary holding wheel disposed in'v edgewise alignment with said supporting sheave and adjacent to said supporting sheave, said holding wheel having a `plurality of regularly spaced projections on its periphery, each ofsaid projections being adapted when in a position proximate to the periphery of said supporting sheave to cooperate with said supporting sheave to pre` vent passage of the enlarged portion of said cable between said projections and the periphery of said supporting sheave, means for actuating said holding wheel to dispose said projections successively in orout of position proximate to the periphery of said supporting sheave, and means for preventing return rotary movement of said holding wheel, said holding wheel actuating Vmeans being adapted to be actuated by said eng larged portion of the cable.

3. In a'conveyer, a cable having an end portion attachable to a load that is to be carried and having an enlarged portion ad jacent to said attaching end portion, a movable overhead supporting sheave over which said cable is trained, a rotary holding wheel disposed in edgewise alignment with said llt) supporting slieave and adjacent to said supporting sheave, said holding wheel having a plurality of regularly spaced projections on its periphery, ,eachA of said projections being adapted when in a position proximate to the periphery of said supporting sheave to cooperate with said supporting sheave to prevent passage ot the enlarged port-ion ot said cable between said projections and the periphery ot said supporting sheave, means tor actuating said holding wheel to dispose said projections successively in or out of position j n'oxiinate to the periphery oi'f said supporting sheave, each ol" said projections on the holding wheel and the periphery of said supporting slieave having cooperative grooves for the passage o't' the main portion .of the cable and constituting a way ot less cross sectional area than the cross sectional area of said enlarged portion ot the cable.

t. ln a conveyer, an overhead carriage includingv a pair of spaced side plates, a sup'- poiting sheave disposed between said side plates, a holding wheel disposed between said side plates above said supporting sheave, said holding wheel having regularly spaced projections on its periphery adapted to be moved successively when said lholding wheel is turned about its axis to positions toezitend close to the periphery of said supporting sheave, a cable having an end portion attacl .ible to a load that is to be carried and having an enlarged portion adjacent to saidv attaching portion, said cable being passed 'over' said supporting sheave, said supporting sheave having a peripheral groove and cach of said projections on the holding wheel having a groove Vin its outer end adapted to cooperate with the groove in the periphery ol `said supporting sheave when said projection is proximate to said periphery o'l the supporting sheave to .produce a way in which the iii-ain portion oit saidv cable may inove longitudinally, said way being ot less area in cross section than said enlarged portion o'f the cable, means operable :by the enlarged portion of said cable to turn said holding wheel a part of a revolution equal to rhalt the distance on the periphery of the holding wheel between the centers of adjacent projections on the holding wheel, and means tor preventing return rotary movement ot said holding wheel after said holding'wheel has been turned inone direct-ion by said actuat-y ing means.

5. ln a conveyer, an overhead carriage including a pair of spaced side plates', la' 'supporting sheave disposed between said side plates, a holding wheel disposed between said side plates above said supporting sheave, said. holding wheel having regularly spaced projections on its periphery adapted to be moved successively when said holding wheel is turned about its axis to positions to eX- tend close to the periphery o'l said supportygroove and each otsaid projectionson the holding wheel having agroove in its outer `end vadapted to cooperate with the groove in the periphery et said supporting sheave when said projection is proximate tosaid periphery of the supporting sheave to produce a way in which theA main portion of said cable may move longitudinally, said way being ot less area in cross section than said enlarged portion of the cable, ineans operable by the enlarged portion ezt' said cable to turn said holding wheel a part of a revolution equal to lia-lt the distance on the periphery oi the holding wheel between the centers ot adjacent projections on .the holding wheel, means for preventing return rotary movement oit said holding -wheel after said holding wheel has been turned in one direction -by said actuating means, and a guide slieave supported between said side plates substantial-ly at the level of said supporting sheave and in edgewise alignmentwith said supporting sheave, said cable passing over said guide sheave, saidA holding wheel actuating means comprising a ratchet wheel rigid ivitlrthe holding wheel and in axialaligninent with the holding wheel, said ratchet wheel having twice as many teeth on its periphery as there. are projections on said holding wheel, an actuating pawl engageable with the teeth oit` the ratchet wheel successively to effect turning of said ratchet wheel and said .holding wheel in said one direction about lthe axial line of .the holding wheel, and a lever operable by said enlarged portion oit the cablel for actuating said actuating pawl. Y

' 6. In a conveyer,` an overhead carriage including a pair of spaced side plates, a supporting sheave disposed between said side plates, 'a holding wheel disposed between said side plates above said supporting sheave, said holding Wheel having regularly spaced projections .on its periphery adapted'to be moved successively'when said holding wheel is turned about its axis to 'positions Ato entend close to the periphery ot said supporting shea-ve, a cable having an end portion attacliable to -a `load vthirtis to be carried-and having an lenlarged portion adjacent to said attaching portion, said cable being passed over said supporting sheave, said sr'ipporting sheave having a peripheral groove and each of' said projections on the holding wheel having a groove in its outer end adapted to cooperate with the groove in the periphery of said supporting sheave' when said projection is proximate to said periphery ol the supporting sheave llt) lli

to produce a way in which the main portion ot said cable may move longitudinally, said way/ being of less area in cross section than said enlarged portioiirof the cable, ineans operable by the enlarged portion of said cable to turn said holding wheel a 'part oi a revolution equal to halt the distance on the periplieiy of the holding wheel between the centers of adjacent projections on the rigid with the holding wheel and in axialv alignment with the holdingk wheel,Y said ratchet Wheel having twice as many teeth on its periphery as therel are projections on said holding wheel, an actuating pawl engageable with the teeth of the ratchet wheel successively to eil'ect turning oi' said ratchet wheel and said holding wheel in said one direction about the axial line of the holding` wheel, a lever operable by said enlarged poi'- tioii `of the cable for actuating said actuating pawl, said lever being pivotally connected at its upper end with said actuating pawl and being iulcruined intermediate `its ength between said side plates ofthe carriage, the lower end portion oit said lever having a vertical slotthrough which said cable, including the enlarged portion thereof is passed7 and a plate hinged to the lower endportioi'i of said lever at the side of the latternext to said holding wheel and having a slot through which the inain portion of said cable niay pass but of insutlirient width toperiiiit the passage ot the enlarged portion ol the vcable therethrough. Y

7. ln a eonveyeig a carriage including a pair of spaced. side plates, a supporting sheave disposed between the side platesj a guide sheaveVv disposed between said side plates iii edgewise alignmentwith said supportinggsheave .and substantially at the same level as said supporting sheave, a holding wheel rotatively supported between said side plates above said supporting sheaveand having projections regularly spaced on its periphery and adapted when the holding wheel is turned to be disposed successively in proximity to the upper portioiiof the periphery of said supporting sheave, a` cable passed over said supporting sheave and then over cable having an enlarged portion and'each of Y,

said projections on the holding wheel and said supporting sheave having grooves cooperating to produce a way of greater cross sectional area thanthe main portion of said cable and of less cioss sectional aiea than said enlarged portion of the cable, a ratchet wheel rigid with said holding'wheel and in axial alignment withv the holding wheel, said ratchet wheel having twice as many teeth `on its periphery as there are projections on said holding wheel, an actuatingl pawl engageable with the teeth oftheratchet wheel successivelyr to vcause intermittent rotary movement of said ratchet wheel and ot said holding vwheel, two successive operating strokes of said actuating pawl being required to turn said holding wheel a part of a complete revolution equal to the distance from the periphery of the'holding wheel between the centers of adjacent projections on said holding wheel, a lever ulcrumed interinedr ate its length between said side plates above the space be ween said supporting sheave .and said guide sheave, the upper end por- Ation of said lever being pivotally connected with said actuating pawl Aand the lower end portion oiZ said'lever having a slot adapted to straddle said cable when said lever is in -vertical position and the actuating pawl is at the end of its return stroke after actuating said ratchet wheel, said slot in the lower end portion of said lever being widerthan the enlarged portion of said cableand a supporting plate hingedly attached to the lower end portion of said lever .at the side oli' the latter neXt to said ratchet wheel, said plate having a vertical slot substantially in reg# ister with the slot in the lower end poi-tion of the lever, the slot in said plate being wider than the main portion of said cable but of less width than the enlarged portion of said cable7 a spring acting on said lever to tend to maintain saidlever in vertical position and the actuating pawl there-l ior at the end of its return stroke, and a spring-pressed pivoted pawl engageable with the periphery of the holding wheel andv with the projections thereon to prevent return rotary movement oi2 the holding wheel after said holding wheel has been turnedin one directionjthrough the agency of said actuating pawl.

nov AS MCcoURRY. 

